+#ifndef __forceinline
+# ifdef __GNUC__
+# define __forceinline inline __attribute__((always_inline))
+# endif
+#endif
+
+static __forceinline void swap_gl_buffers(void)
+{
+#ifdef WIN32
+ extern HDC hDC;
+ SwapBuffers( hDC);
+#elif USE_SDL
+ SDL_GL_SwapBuffers();
+#elif PLATFORM_MACOSX
+ extern AGLContext gaglContext;
+ aglSwapBuffers(gaglContext);
+#else
+ #error define your platform.
+#endif
+}
+
+#ifdef __GNUC__
+#define LONGLONGCONST(x) (x##ll)
+#else
+#define LONGLONGCONST(x) (x)
+#endif
+
+extern "C" { void UndefinedSymbolToExposeStubbedCode(void); }
+//#define STUBBED(x) UndefinedSymbolToExposeStubbedCode();
+#define STUBBED(x) { static bool seen = false; if (!seen) { seen = true; fprintf(stderr, "STUBBED: %s at %s:%d\n", x, __FILE__, __LINE__); } }
+//#define STUBBED(x)
+
+#endif